While most stormwater samples get sent off to an accredited lab, pH is one of the few parameters that can be measured in the field.  The process for analyzing pH […]

Sheet flow is one of the most challenging sampling scenarios you can face for the Industrial Stormwater General Permit. The biggest challenge comes from getting enough volume in your sample […]

Sampling stormwater out of a catch basin is a common scenario that many facilities face when sampling for their ISGP.  With multiple stormwater inputs, hard-to-reach sampling points, and heavy coverings, […]

Sampling stormwater from an outlet pipe is often the easiest scenario to sample for your stormwater permit requirements. In most cases, the pipe is easy to identify, provides ample concentrated […]

Sample handling is an often overlooked aspect of stormwater sampling that can have a significant impact on the accuracy of your results. The keys to proper sample handling are to […]

Having all of your stormwater sampling supplies on hand and easily accessible is an essential way to ensure that you never miss a sampling event. While some special circumstances may […]

The early listening sessions have provided a great space for the public to hear the proposed changes to the ISGP, ask questions about the implications of those changes, make suggestions, […]

The Industrial Stormwater General Permit (ISGP) for Washington is set to be reissued in 2025. This reissuance process occurs every 5 years and often brings changes and new challenges that […]

The current Industrial Stormwater General Permit is set to expire on December 31, 2024, and Ecology is currently drafting a new permit for reissuance. As a part of this reissuance […]